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Zeolitic imidazolate framework-67 derived Al-Co-S hierarchical sheets bridged by nitrogen-doped graphene:Incorporation of PANI derived carbon nanorods for solid-state asymmetric supercapacitors

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Journal of Energy Chemistry 2022年第11期31卷 429-445,I0012页

作者： Emad S.Goda Bidhan Pandit Sang Eun Hong Bal Sydulu Singu Seong K.Kim Essam B.Moustafa Kuk Ro yoon Kuk Ro yoon Organic Nanomaterials Lab Department of ChemistryHannam UniversityDaejeon 34054Republic of Korea Gas Analysis and Fire Safety Laboratory Chemistry DivisionNational Institute for Standards136Giza 12211Egypt Department of Materials Science and Engineering and Chemical Engineering Universidad Carlos Ⅲ de MadridAvenida de La Universidad 3028911 LeganésMadridSpain Department of Chemical and Biomolecular Engineering Yonsei UniversitySeoul 03722Republic of Korea Department of Chemical Engineering Hannam University1646 Yuseongdae-roYuseong-guDaejeon 34054Republic of Korea Mechanical Engineering Department Faculty of EngineeringKing Abdulaziz UniversityP.O.Box 80204Jeddah 22254Saudi Arabia

Metal sulfides have been widely enticed as battery-type electrodes in supercapacitor devices because of their maximal theoretical ***,their lower conductivity and ion transport kinetics can largely restrict their rate performance,hence the practical usage in fields of demanding high power ***,the design of new electrodes with higher energy and power densities remains a highly challenging *** the best of our knowledge,a novel hierarchical composite of Al-CoS_(2) on nitrogendoped graphene(NG)is prepared based on a zeolite imidazole framework using a simple and scalable hydrothermal *** this hybrid,ultrathin Al-CoS_(2) nanosheet arrays are vertically orientated on the NG framework to limit self-aggregation,hence increasing the electrical property and cycle stability of *** is investigated that the Al/Co feeding ratio plays a crucial role in controlling the obtained hierarchical structure of Al-Co-S sheets and their electrode ***,Al^(3+) can influence remarkably the morphology and electrochemical property of the resultant graphene *** effective synergism is noticed between the redox Al-CoS_(2) and NG resulting in fast electron transfer and chargingdischarging ***,when the as-developed composite is utilized as a positive electrode at an applied current density of 1 A/g,a specific capacitance of 1915.8 F/g is attained with ultra-long cycle stability(96%,10,000 cycles)and an excellent retention rate(~89%).As a consequence,when a solid-state asymmetric supercapacitor(ASC)device is made by combining an Al-CoS_(2) @NG hybrid with a negative electrode made of polyaniline(PANI)derived carbon nanorods(PCNRs),it demonstrates remarkable specific capacitance(188 F/g),energy density(66.9 Wh/kg),and cyclic stability of 92%after 10,000 *** may open the pathway for the application of the next-generation supercapacitors in the future.

关键词： Hierarchical sheets MOFs Al-doped CoS_(2) Nitrogen-doped graphene Solid-state supercapacitor

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Geometric-phase intraocular lenses with multifocality

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Light(Science & Applications) 2022年第11期11卷 2805-2816页

作者： Seungmin Lee Gayeon Park Senho Kim Yeonghwa Ryu Jae Woong yoon Ho Sk Hwang In Seok Song Chang Sun Lee Seok Ho Song Department of Physics Hanyang UniversitySeoul 04763Republic of Korea Department of Ophthalmology Catholic University of KoreaSeoul 07345Republic of Korea Seoul Ophthalmic Clinic Goyang 10463Republic of Korea Koryoeyetech In.Seoul 06093Republic of Korea Tigernics IncSeoul 04763Republic of Korea

We demonstrate a new type of multifocal and extended depth of focus(EDOF)intraocular lenses(IOLs)embeddingμm-thin geometric phase(GP)lens *** an emerging approach for lens phase design,the GP modulated IOLs outperform conventional diffractive IOLs in multifocality while completely avoiding the clinically undesirable demand for additional surface patterns to standard monofocal IOL *** number of foci and light splitting ratio of the GP IOLs are adjusted by changing the number of stacked GP layers and the thickness of each *** and trifocal GP IOLs are fabricated by radial alignment of anisotropic orientation in UV-curable liquid crystal *** characterizing the defocus image and modulation transfer function of the GP IOLs,it is expected that GP IOLs will alleviate the most common problems associated with multifocal and EDOF IOLs,blurred vision and photic phenomena caused by light scattering and posterior capsule opacification.

关键词： layer phase alignment

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Clinicopathological significance of altered Notch signaling in extrahepatic cholangiocarcinoma and gallbladder carcinoma

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World Journal of Gastroenterology 2011年第35期17卷 4023-4030页

作者： Hyun Ah yoon Myung Hwan Noh Byung Geun Kim Ji Sun Han Jin Seok Jang Seok Ryeol Choi Jin Sook Jeong Jin Ho chun Department of Gastroenterology Dong-A University Hospital3-1Dong dae shindongSeo-guBusan 602-715South Korea Department of Pathology Dong-A University Hospital3-1Dong dae shin-dongSeo-guBusan 602-715 South Korea Department of Preventive Medicine Inje University HospitalGae gum 2-dongBusanjinguBusan 614-735 South Korea

AIM:To investigate the role and clinicopathological significance of aberrant expression of Notch receptors and Delta-like ligand-4 (DLL4) in extrahepatic cholangiocarcinoma and gallbladder ***:One hundred and ten patients had surgically resected extrahepatic cholangiocarcinoma (CC) and gallbladder carcinoma specimens examined by immunohistochemistry of available paraffin *** was performed using anti-Notch receptors 1-4 and anti-DLL4 *** scored the immunopositivity of Notch receptors and DLL4 expression by percentage of positive tumor cells with cytoplasmic expression and intensity of *** nuclear localization was ***-logical parameters and survival data were compared with the expression of Notch receptors 1-4 and ***:Notch receptor proteins showed in the cytoplasm with or without nuclear expression in cancer cells,as well as showing weak cytoplasmic expression in non-neoplastic *** semiquantitative evaluation,positive immunostaining of Notch receptor 1 was detected in 96 cases (87.3%),Notch receptor 2 in 97 (88.2%),Notch receptor 3 in 97 (88.2%),Notch receptor 4 in 103 (93.6),and DLL4 in 84 (76.4%).In addition,coex- istent nuclear localization was noted [Notch receptor 1;18 cases (18.8%),Notch receptor 2;40 (41.2%),Notch receptor 3;32 (33.0%),Notch receptor 4;99 (96.1%),DLL4;48 (57.1%)].Notch receptor 1 expression was correlated with advanced tumor,node,metastasis (TNM) stage (P=0.043),Notch receptor 3 with advanced T stage (P=0.017),tendency to express in cases with nodal metastasis (P=0.065) and advanced TNM stage (P=0.052).DLL4 expression tended to be related to less histological differentiation (P=0.095).Coexistent nuclear localization of Notch receptor 3 was related to no nodal metastasis (P=0.027) and Notch receptor 4 with less histological differentiation (P=0.036),while DLL4 tended to be related inversely with T stage (P=0.053).Coexistent nuclear localizatio

关键词：临床意义癌症胆囊胆管 Notch 免疫组织化学受体蛋白肝

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Turning an FDA-approved therapeutic into an AIEgen for imaging live bacteria and for bacterial detection

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Aggregate 2021年第2期2卷 1-2页

作者： Juyoung yoon Department of Chemistry and Nanoscience Ewha Womans UniversitySeoulRepublic of Korea

Aggregation Induced Emission(AIE)is an attractive,fluorescent-based phenomenon that can be used to design fluorescent imaging agents and fluorescent *** this highlight,we discuss a recently reported study that identifies the chemical scaffold of an FDA-approved therapeutic(deferasirox)as a molecule with AIE-like properties(AIEgen).Utilizing its therapeutic efficacy for bacterial biofilms,deferasiroxderivatives were shown able to treat and image bacteria biofilms and detect a bacterial *** demonstrates the potential of AIE for drug design as this allows the simultaneous ability to image the therapeutic’s location and mode of action.

关键词： Aggregation-Induced Emission Antimicrobials Fluorescence imaging and Theranostics

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Conservation and Diversification of the SHR-SCR- SCL23 Regulatory Network in the Development of the Functional Endodermis in Arabidopsis Shoots

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Molecular Plant 2016年第8期9卷 1197-1209页

作者： Eun Kyung yoon Souvik Dhar Mi-Hyun Lee Jae hyo Song Shin Ae Lee Gyuree Kim Sejeong Jang Ji Won Choi Jeong-Eun Choe Jeong Hoe Kim Myeong Min Lee Jun Lim Department of Systems Biotechnology Konkuk University Seoul 05029 Korea Department of Systems Biology Yonsei University Seoul 03722 Korea Department of Biology Kyungpook National University Daegu 41566 Korea 4TheSe tlRors cotribCited equally/to ttats article Present address: Department of Agricultural Biotechnology National Institute of Agricultural Sciences Jeonju 54874 Korea Present address: Department of Agricultural Biology National Institute of Agricultural Sciences Wanju 55365 Korea

Development of the functional endodermis of Arabidopsis thaliana roots is controlled, in part, by GRAS transcription factors, namely SHORT-ROOT （SHR）, SCARECROW （SCR）, and SCARECROW-LIKE 23 （SCL23）. Recently, it has been shown that the SHR-SCR-SCL23 regulatory module is also essential for spec- ification of the endodermis （known as the bundle sheath） in leaves. Nevertheless, compared with what is known about the role of the SHR-SCR-SCL23 regulatory network in roots, the molecular interactions of SHR, SCR, and SCL23 are much less understood in shoots. Here, we show that SHR forms protein com- plexes with SCL23 to regulate transcription of SCL23 in shoots, similar to the regulation mode of SCR expression. Our results indicate that SHR acts as master regulator to directly activate the expression of SCR and SCL23. In the SHR-SCR-SCL23 network, we found a previously uncharacterized negative feed- back loop whereby SCL23 modulates SHR levels. Through molecular, genetic, physiological, and morpho- logical analyses, we also reveal that the SHR-SCR-SCL23 module plays a key role in the formation of the endodermis （known as the starch sheath） in hypocotyls. Taken together, our results provide new insights into the regulatory role of the SHR-SCR-SCL23 network in the endodermis development in both roots and shoots.

关键词： endodermis gene regulatory network SHORT-ROOT SCARECROW SCARECROW-LIKE 23,transcription factor

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Neurons in the hippocampal CA1 region,but not the dentate gyrus,are susceptible to oxidative stress in rats with streptozotocin-induced type 1 diabetes

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Neural Regeneration Research 2015年第3期10卷 451-456页

作者： Sang Gun Lee Dae Young Yoo hyo Young Jung Sung Min Nam Jong Whi Kim Jung Hoon Choi Sun Shin Yi Moo-Ho Won Yeo Sung yoon In Koo Hwang Seung Myung Moon Departments of Neurosurgery Dongtan Sacred Heart HospitalCollege of MedicineHallym University Department of Anatomy and Cell Biology College of Veterinary Medicineand Research Institute for Veterinary ScienceSeoul National University Department of Anatomy College of Veterinary MedicineKangwon National University Department of Biomedical Laboratory Science College of Medical SciencesSoonchunhyang University Department of Neurobiology School of MedicineKangwon National University

In this study, we investigated the effects of streptozotocin-induced type 1 diabetes on antioxi- dant-like protein-1 immunoreactivity, protein carbonyl levels, and malondialdehyde formation, a marker for lipid peroxidation, in the hippocampus. For this study, streptozotocin （75 mg/kg） was intraperitoneally injected into adult rats to induce type 1 diabetes. The three experimental pa- rameters were determined at 2, 3, 4 weeks after streptozotocin treatment. Fasting blood glucose levels significantly increased by 20.7-21.9 mM after streptozotocin treatment. The number of antioxidant-like protein-1 immunoreactive neurons significantly decreased in the hippocampal CA1 region, but not the dentate gyrus, 3 weeks after streptozotocin treatment compared to the control group. Malondialdehyde and protein carbonyl levels, which are modified by oxidative stress, significantly increased with a peak at 3 weeks after malondialdehyde treatment, and then decreased 4 weeks after malondialdehyde treatment. These results suggest that neurons in the hippocampal CA1 region, but not the dentate gyrus, are susceptible to oxidative stress 3 weeks after malondialdehyde treatment.

关键词： nerve regeneration hippocampus dentate gyrus lipid peroxidation type 1 diabetes malondialdehyde neurons neural regeneration

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Striping and Scheduling for Large Scale Multimedia Servers

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Journal of Computer Science & Technology 2004年第6期19卷 885-895页

作者： Kyung-OhLee Jun-HoPark yoon-YoungPark DepartmentofComputerScience SunmoonUniversity100TangJeonMyunKalsanRiAsansiChunNam336-840Korea

When designing a multimedia server, several things must be decided: which scheduling scheme to adopt, how to allocate multimedia objects on storage devices, and the round length with which the streams will be serviced. Several problems in the designing of large-scale multimedia servers are addressed, with the following contributions: (1) a striping scheme is proposed that minimizes the number of seeks and hence maximizes the performance; (2) a simple and efficient mechanism is presented to find the optimal striping unit size as well as the optimal round length, which exploits both the characteristics of VBR streams and the situation of resources in the system; and (3) the characteristics and resource requirements of several scheduling schemes are investigated in order to obtain a clear indication as to which scheme shows the best performance in realtime multimedia servicing. Based on our analysis and experimental results, the CSCAN scheme outperforms the other schemes. It is believed that the results are of value in the design of effective large-scale multimedia servers. Keywords realtime multimedia - storage server - scheduling - data placement - buffer management - variable bit rate This work was supported in part by the University IT Research Center Project and Sunmoon University Research Project.Kyung-Oh Lee is an associate professor in the Faculty of Computer and Information Sciences, Sunmoon University, Korea. He received his B.S., M.S. and Ph.D. degrees in computer science from Seoul National University in 1989, 1994 and 1999, respectively. His current research interests include multimedia system, database, mobile communication. He is a member of KIPS (Korea Information Processing Society).Jungho-Ho Park is a professor in the Divisions of Computer and Information Sciences, Sunmoon University, Korea. He received his M.S. and Ph.D. degrees in computer science from Osaka University in 1987 and 1990, respectively. His current research interests include d

关键词： realtime multimedia storage server scheduling data placement buffer management variable bit rate

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Inverse Problem of Flame Surface Properties of Wood using a Repulsive Particle Swarm Optimization Algorithm

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Journal of Thermal Science 2015年第2期24卷 173-178页

作者： Kyung-Beom yoon Won-Hee Park Korea Conformity Laboratories 199Gasan-digital 1-roGeumcheon-guSeoul 153-803Korea Korea Railroad Research Institute 176 Cheoldobangmulgwan-roUiwang-siGyeonggi-do 437-757Korea Korea University of Science and Technology (UST) 217 Gajeong-roYuseong-guDaejeon 305-350 Korea

The convective heat transfer coefficient and surface emissivity before and after flame occurrence on a wood specimen surface and the flame heat flux were estimated using the repulsive particle swarm optimization algorithm and cone heater test results. The cone heater specified in the ISO 5660 standards was used, and six cone heater heat fluxes were tested. Preservative-treated Douglas fir 21 mm in thickness was used as the wood specimen in the tests. This study confirmed that the surface temperature of the specimen, which was calculated using the convective heat transfer coefficient, surface emissivity and flame heat flux on the wood specimen by a repulsive particle swarm optimization algorithm, was consistent with the measured temperature. Considering the measurement errors in the surface temperature of the specimen, the applicability of the optimization method considered in this study was evaluated.

关键词：表面特性优化算法火焰木材逆问题表面温度对流换热粒子群算法

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Designing a Biomimetic Ornithopter Capable of Sustained and Controlled Flight

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Journal of Bionic Engineering 2008年第1期5卷 39-47页

作者： Joon Hyuk Park Kwang-Joon yoon Department of Aerospace Information System and Artificial Muscle Research Center Konkuk University Seoul 143-701 Korea

We describe the design of four ornithopters ranging in wing span from 10 cm to 40 cm, and in weight from 5 g to 45 g. The controllability and power supply are two major considerations, so we compare the efficiency and characteristics between different types of subsystems such as gearbox and tail shape. Our current omithopter is radio-controlled with inbuilt visual sensing and capable of takeoff and landing. We also concentrate on its wing efficiency based on design inspired by a real insect wing and consider that aspects of insect flight such as delayed stall and wake capture are essential at such small size. Most importantly, the advance ratio, controlled either by enlarging the wing beat amplitude or raising the wing beat frequency, is the most significant factor in an ornithopter which mimics an insect.

关键词： biomimetic ornithopter flapping wing unsteady state low Reynolds number

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Gastric cancer surgery in South Korea: Past, present, and future

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Chinese Journal of Cancer Research 2023年第6期35卷 627-635页

作者： Sung Gon Kim Sang Eok Lee Bang Wool Eom Hong Man yoon Young-Woo Kim Keun Won Ryu Department of Surgery Konyang University HospitalDaejeon 35365Republic of Korea Center for Gastric Cancer Research Institute&HospitalNational Cancer CenterGoyang-si 410-769Republic of Korea

Gastric cancer remains a significant global health concern and its surgical management approaches have undergone significant changes in South Korea and worldwide. Subtotal or total gastrectomy with D2 lymph node dissection is well established as a standard surgical procedure for gastric cancer. With the active implementation of cancer screening in South Korea, the proportion of early gastric cancer cases has significantly increased over the past few decades, leading to a steady increase in the survival rate among patients. Furthermore, recent advances in surgical instruments and techniques have made minimally invasive surgery increasingly prevalent, not only for early but also for advanced gastric cancer. We aim to provide a comprehensive overview of the evolution and current status of gastric cancer surgery in South Korea.

关键词： Function-preserving surgery gastric cancer minimally invasive surgery surgery

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